Unit name |
Incremental Encoder Input Units |
Model |
NX-EC0132 |
Number of channels |
1 channel |
Type of external
connections |
Screwless clamping terminal block
(12 terminals × 2) |
I/O refreshing method |
Free-Run refreshing, synchronous I/O refreshing or task period prioritized refreshing * |
Indicators |
|
Input signals |
Counter: Phases A, B, and Z
External Inputs: 3 |
Input form |
Line receiver input |
Counting unit |
Pulses |
Pulse input method |
Phase differential pulse (multiplication x2/4), pulse + direction inputs,
or up and down pulse inputs |
Counter range |
-2,147,483,648 to 2,147,483,647 pulses |
Counter functions |
|
Counter type |
Ring counter or linear counter |
Counter controls |
Gate control, counter reset, and counter preset |
Latch function |
Two external input latches and one internal latch |
Measurements |
Pulse rate measurement and pulse period measurement |
Line driver specifications |
|
Input voltage |
EIA standard RS-422-A line
driver levels |
High level input
voltage |
VIT+: 0.1 V min. |
Input impedance |
120 Ω ± 5% |
Low level input
voltage |
VIT-: -0.1 V min. |
Hysteresis voltage |
Vhys (VIT+ - VIT-): 60 mV |
Maximum response
frequency |
Phases A and B: Single-phase 4 MHz (phase differential pulse input x4: 1 MHz),
Phase Z: 1 MHz |
5-V power supply for
encoder |
Output voltage: 5 VDC ±5%
Output current: 500 mA max. |
External input specifications |
|
Input voltage |
20.4 to 28.8 VDC
(24 VDC +20%, -15%) |
ON voltage/
ON current |
15 VDC min./3 mA min. |
Input current |
3.5 mA typical (24 VDC) |
OFF voltage/
OFF current |
5.0 VDC max./1 mA max. |
ON/OFF response
time |
1 μs max./1 μs max. |
Internal I/O common
processing |
NPN |
Dimensions |
12 × 100 × 71 mm
(W × H × D) |
Isolation method |
Digital isolator |
Insulation resistance |
20 MΩ min. between isolated
circuits (at 100 VDC) |
Dielectric
strength |
510 VAC between isolated circuits
for 1 minute with leakage current
of 5 mA max. |
I/O power supply
method |
Supplied from the NX bus.
20.4 to 28.8 VDC
(24 VDC +20%, -15%) |
Current capacity
of I/O power
supply terminals |
IOV: 0.1 A max. per terminal
IOG: 0.1 A max. per terminal |
NX Unit power
consumption |
• Connected to a CPU Unit
1.25 W max.
• Connected to a Commu-
nications Coupler Unit
0.95 W max. |
Current
consumption from
I/O power supply |
Unit current consumption: 30 mA max.
Consumption from encoder
5-V power supply:
Encoder current consumption
*0.28 mA |
Weight |
130 g max. |
Circuit layout |
|
Installation orientation
and restrictions |
Installation orientation:
• Connected to a CPU Unit: Possible in upright installation.
• Connected to a Communications Coupler Unit: Possible in 6 orientations.
Restrictions: There are no restrictions. |
Terminal connection
diagram |
|
Failure detection |
None |
Protection |
None |